What airlines fly to Lisbon?

United Airlines, British Airways and American Airlines are the top three most popular airlines that fly to Lisbon from Knoxville according to our data. United Airlines is the first choice among our users, with 48% of people opting to fly with this airline when traveling to Lisbon. Keep in mind that there are 4 different airlines that fly to Lisbon on a routine basis, so you have a few additional options to choose from.

Which layover airport has the shortest connection time from Knoxville to Lisbon?

Washington, D.C. (IAD) has the shortest average layover time for this route: 1h 45m.

Which layover airport has the shortest travel time from Knoxville to Lisbon?

Flights connecting via Washington, D.C. (IAD) have the shortest average one-way travel time: 9h 55m.

Which airport is the most popular layover for flights between Knoxville and Lisbon?

Washington, D.C. (IAD) was the most common stop: 86% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport offers the lowest fares from Knoxville to Lisbon?

Flights via Washington, D.C. (IAD) offer the lowest average round-trip price of $760.

When did momondo last update prices for flights from Knoxville McGhee Tyson Airport to Lisbon Humberto Delgado Airport?

Prices for flights from Knoxville McGhee Tyson Airport to Lisbon Humberto Delgado Airport are updated daily.

How many operators does momondo search for flights from Knoxville McGhee Tyson Airport to Lisbon Humberto Delgado Airport?

As of August 2026, there are 2 operators available to choose from for flights from Knoxville McGhee Tyson Airport to Lisbon Humberto Delgado Airport.

How old do you have to be to fly from Knoxville McGhee Tyson Airport to Lisbon Humberto Delgado Airport?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Knoxville McGhee Tyson Airport to Lisbon Humberto Delgado Airport.

What documentation or ID do you need to fly to Lisbon Humberto Delgado Airport?

The required travel and health documents for your Lisbon Humberto Delgado Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Lisbon Humberto Delgado Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$727 Cheap Flights from Knoxville to Lisbon in 2026

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7:35 pm - 11:30 pmTYS Knoxville McGhee Tyson-LIS Lisbon Humberto Delgado

22h 55m2 stops Washington, D.C. Dulles Intl Munich Franz Josef Strauss

5:00 am - 11:59 pmLIS Lisbon Humberto Delgado-TYS Knoxville McGhee Tyson

23h 59m2 stops Frankfurt am Main Washington, D.C. Dulles Intl

$727Lufthansa

Wed, Nov 11 - Wed, Nov 18

4:30 pm - 8:10 amTYS Knoxville McGhee Tyson-LIS Lisbon Humberto Delgado

10h 40m1 stop Newark

5:00 am - 8:54 pmLIS Lisbon Humberto Delgado-TYS Knoxville McGhee Tyson

20h 54m2 stops Frankfurt am Main Chicago O'Hare Intl

$734United Airlines

Wed, Nov 11 - Wed, Nov 18

4:30 pm - 8:10 amTYS Knoxville McGhee Tyson-LIS Lisbon Humberto Delgado

10h 40m1 stop Newark

11:55 am - 7:36 pmLIS Lisbon Humberto Delgado-TYS Knoxville McGhee Tyson

12h 41m1 stop Washington, D.C. Dulles Intl

$746United Airlines

Wed, Nov 11 - Wed, Nov 18

6:00 am - 8:00 amTYS Knoxville McGhee Tyson-LIS Lisbon Humberto Delgado

21h 00m2 stops Atlanta Hartsfield-Jackson New York John F Kennedy Intl

5:30 am - 11:46 pmLIS Lisbon Humberto Delgado-TYS Knoxville McGhee Tyson

23h 16m2 stops Paris Charles de Gaulle Atlanta Hartsfield-Jackson

$748Delta

Sun, Dec 13 - Wed, Dec 23

2:40 pm - 9:00 amTYS Knoxville McGhee Tyson-LIS Lisbon Humberto Delgado

13h 20m2 stops Atlanta Hartsfield-Jackson Boston Logan Intl

5:30 am - 8:40 pmLIS Lisbon Humberto Delgado-TYS Knoxville McGhee Tyson

20h 10m2 stops Paris Charles de Gaulle Atlanta Hartsfield-Jackson

$748Air France

Sun, Dec 13 - Wed, Dec 23

4:16 pm - 8:10 amTYS Knoxville McGhee Tyson-LIS Lisbon Humberto Delgado

10h 54m1 stop Newark

11:55 am - 2:45 pmLIS Lisbon Humberto Delgado-TYS Knoxville McGhee Tyson

31h 50m1 stop Washington, D.C. Dulles Intl

$752United Airlines

Sun, Dec 13 - Wed, Dec 23

11:33 am - 5:45 pmTYS Knoxville McGhee Tyson-LIS Lisbon Humberto Delgado

25h 12m2 stops Chicago O'Hare Intl London Heathrow

11:05 am - 5:56 pmLIS Lisbon Humberto Delgado-TYS Knoxville McGhee Tyson

11h 51m1 stop Philadelphia

$772British Airways

Sun, Dec 13 - Wed, Dec 23

7:50 am - 9:05 amTYS Knoxville McGhee Tyson-LIS Lisbon Humberto Delgado

20h 15m1 stop Philadelphia

11:05 am - 8:49 pmLIS Lisbon Humberto Delgado-TYS Knoxville McGhee Tyson

14h 44m1 stop Philadelphia

$773British Airways

Sun, Nov 1 - Sun, Nov 15

12:42 pm - 9:05 amTYS Knoxville McGhee Tyson-LIS Lisbon Humberto Delgado

15h 23m1 stop Philadelphia

11:05 am - 5:56 pmLIS Lisbon Humberto Delgado-TYS Knoxville McGhee Tyson

11h 51m1 stop Philadelphia

$774British Airways

Sun, Dec 13 - Wed, Dec 23

5:45 am - 10:30 amTYS Knoxville McGhee Tyson-LIS Lisbon Humberto Delgado

23h 45m1 stop Washington, D.C. Dulles Intl

6:45 am - 11:59 pmLIS Lisbon Humberto Delgado-TYS Knoxville McGhee Tyson

22h 14m2 stops Frankfurt am Main Washington, D.C. Dulles Intl

$790Multiple Airlines

Mon, Sep 28 - Wed, Oct 14

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Lufthansa flights from Knoxville to Lisbon

Our best Lufthansa deals on Knoxville to Lisbon flight tickets

Lufthansa

Nov 11

TYS7:35 pmKnoxville McGhee Tyson

22h 55m

2 stops

LIS11:30 pmLisbon Humberto Delgado

Nov 18

LIS5:00 amLisbon Humberto Delgado

23h 59m

2 stops

TYS11:59 pmKnoxville McGhee Tyson

$727

Lufthansa

Sep 19

TYS5:45 amKnoxville McGhee Tyson

23h 50m

1 stop

LIS10:35 amLisbon Humberto Delgado

Sep 30

LIS12:20 pmLisbon Humberto Delgado

16h 39m

1 stop

TYS11:59 pmKnoxville McGhee Tyson

$1,102

United Airlines flights from Knoxville to Lisbon

Our best United Airlines deals on Knoxville to Lisbon flight tickets

United Airlines

Nov 11

TYS4:30 pmKnoxville McGhee Tyson

10h 40m

1 stop

LIS8:10 amLisbon Humberto Delgado

Nov 18

LIS5:00 amLisbon Humberto Delgado

20h 54m

2 stops

TYS8:54 pmKnoxville McGhee Tyson

$734

United Airlines

Nov 11

TYS4:30 pmKnoxville McGhee Tyson

10h 40m

1 stop

LIS8:10 amLisbon Humberto Delgado

Nov 18

LIS11:55 amLisbon Humberto Delgado

12h 41m

1 stop

TYS7:36 pmKnoxville McGhee Tyson

$746

United Airlines

Dec 13

TYS4:16 pmKnoxville McGhee Tyson

10h 54m

1 stop

LIS8:10 amLisbon Humberto Delgado

Dec 23

LIS11:55 amLisbon Humberto Delgado

31h 50m

1 stop

TYS2:45 pmKnoxville McGhee Tyson

$752

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Cheapest round-trip

KnoxvilleLisbon

TYS Knoxville McGhee Tyson - LIS Lisbon Humberto Delgado

TYSLIS

Knoxville McGhee Tyson

Wed 11/11

7:35 pm-11:30 pm

2 stops22h 55m

Lisbon Humberto Delgado

Wed 11/18

5:00 am-11:59 pm

2 stops23h 59m

$727

KnoxvilleLisbon

TYS Knoxville McGhee Tyson - LIS Lisbon Humberto Delgado

TYSLIS

Knoxville McGhee Tyson

Wed 11/11

4:30 pm-8:10 am

1 stop10h 40m

Lisbon Humberto Delgado

Wed 11/18

5:00 am-8:54 pm

2 stops20h 54m

$734

Quickest round-trip

KnoxvilleLisbon

TYS Knoxville McGhee Tyson - LIS Lisbon Humberto Delgado

TYSLIS

Knoxville McGhee Tyson

Wed 11/11

4:30 pm-8:10 am

1 stop10h 40m

Lisbon Humberto Delgado

Wed 11/18

11:55 am-7:36 pm

1 stop12h 41m

$746

KnoxvilleLisbon

TYS Knoxville McGhee Tyson - LIS Lisbon Humberto Delgado

TYSLIS

Knoxville McGhee Tyson

Sun 12/13

6:00 am-8:00 am

2 stops21h 00m

Lisbon Humberto Delgado

Wed 12/23

5:30 am-11:46 pm

2 stops23h 16m

$748

KnoxvilleLisbon

TYS Knoxville McGhee Tyson - LIS Lisbon Humberto Delgado

TYSLIS

Knoxville McGhee Tyson

Sun 12/13

2:40 pm-9:00 am

2 stops13h 20m

Lisbon Humberto Delgado

Wed 12/23

5:30 am-8:40 pm

2 stops20h 10m

$748

KnoxvilleLisbon

TYS Knoxville McGhee Tyson - LIS Lisbon Humberto Delgado

TYSLIS

Knoxville McGhee Tyson

Sun 12/13

4:16 pm-8:10 am

1 stop10h 54m

Lisbon Humberto Delgado

Wed 12/23

11:55 am-2:45 pm

1 stop31h 50m

$752

KnoxvilleLisbon

TYS Knoxville McGhee Tyson - LIS Lisbon Humberto Delgado

TYSLIS

Knoxville McGhee Tyson

Sun 12/13

11:33 am-5:45 pm

2 stops25h 12m

Lisbon Humberto Delgado

Wed 12/23

11:05 am-5:56 pm

1 stop11h 51m

$772

KnoxvilleLisbon

TYS Knoxville McGhee Tyson - LIS Lisbon Humberto Delgado

TYSLIS

Knoxville McGhee Tyson

Sun 11/1

7:50 am-9:05 am

1 stop20h 15m

Lisbon Humberto Delgado

Sun 11/15

11:05 am-8:49 pm

1 stop14h 44m

$773

KnoxvilleLisbon

TYS Knoxville McGhee Tyson - LIS Lisbon Humberto Delgado

TYSLIS

Knoxville McGhee Tyson

Sun 12/13

12:42 pm-9:05 am

1 stop15h 23m

Lisbon Humberto Delgado

Wed 12/23

11:05 am-5:56 pm

1 stop11h 51m

$774

KnoxvilleLisbon

TYS Knoxville McGhee Tyson - LIS Lisbon Humberto Delgado

TYSLIS

Knoxville McGhee Tyson

Mon 9/28

5:45 am-10:30 am

1 stop23h 45m

Lisbon Humberto Delgado

Wed 10/14

6:45 am-11:59 pm

2 stops22h 14m

$790

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

How to get the cheapest flight ticket from Knoxville to Lisbon

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Layovers

What is the cheapest month to fly to Lisbon?

In general, January is the cheapest month to fly from Knoxville to Lisbon. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $527. If you are unable to visit Lisbon during the month of January, then departing from Knoxville during the month February is also very affordable. Most momondo users find prices during this month for around $765.

Can stopping save me money on Knoxville to Lisbon flights?

You could potentially save up to 57% on your flight if you consider stops on a Knoxville to Lisbon flight.

When to book flights from Knoxville to Lisbon

Are you open to changing your travel dates? Check out the ideal times to fly from Knoxville to Lisbon according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Knoxville to Lisbon (TYS to LIS) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Knoxville to Lisbon

Best Price Found	$727
Fastest flight time	18h 40m
Direct flights	None

The best flight deal from Knoxville to Lisbon found on momondo in the last 72 hours is $727

The fastest flight from Knoxville to Lisbon takes 18h 40m

There are no direct flights from Knoxville to Lisbon. There are no popular flight routes from Knoxville to Lisbon.

Search flight deals

Frequently asked questions about flying from Knoxville to Lisbon

How far is Knoxville McGhee Tyson to Lisbon Humberto Delgado by plane?
Lisbon Humberto Delgado is 3990.0 mi away from Knoxville McGhee Tyson. 18h 40m is a normal flight duration for this route.
When did momondo last update prices for flights from Knoxville McGhee Tyson Airport to Lisbon Humberto Delgado Airport?
Prices for flights from Knoxville McGhee Tyson Airport to Lisbon Humberto Delgado Airport are updated daily.
How many operators does momondo search for flights from Knoxville McGhee Tyson Airport to Lisbon Humberto Delgado Airport?
As of August 2026, there are 2 operators available to choose from for flights from Knoxville McGhee Tyson Airport to Lisbon Humberto Delgado Airport.
How old do you have to be to fly from Knoxville McGhee Tyson Airport to Lisbon Humberto Delgado Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Knoxville McGhee Tyson Airport to Lisbon Humberto Delgado Airport.
What documentation or ID do you need to fly to Lisbon Humberto Delgado Airport?
The required travel and health documents for your Lisbon Humberto Delgado Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Lisbon Humberto Delgado Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular airline from Knoxville to Lisbon?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Knoxville to Lisbon is United Airlines (56% of total bookings). The next most popular airline is British Airways (44%).

Best airlines flying from Knoxville to Lisbon

Compare and see reviews for airlines that fly from Knoxville to Lisbon with momondo

Airline	Rating	Free Cancellation	Price
British Airways	PriceFrom $475	Free Cancellation	Rating 6.7 8,170 reviews		Search British Airways flights
United Airlines	PriceFrom $629	Free Cancellation	Rating 7.4 10,106 reviews		Search United Airlines flights

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Why should I use momondo to find a flight deal from Knoxville to Lisbon?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Knoxville to Lisbon. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Knoxville to Lisbon with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Knoxville to Lisbon flights to just show those with flexible booking policies.

How can momondo help me find flights from Knoxville to Lisbon?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Lisbon from Knoxville.

I’m not ready to book a flight from Knoxville to Lisbon right now. Can momondo alert me if prices change?

Price alerts on flights to Lisbon from Knoxville are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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Cheap flights from Knoxville to Lisbon from $727

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Knoxville to Lisbon departing on 11/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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How to get the cheapest flight ticket from Knoxville to Lisbon

What is the cheapest month to fly to Lisbon?

Can stopping save me money on Knoxville to Lisbon flights?

What airlines fly to Lisbon?

Which airport is the most popular layover for flights between Knoxville and Lisbon?

Which layover airport offers the lowest fares from Knoxville to Lisbon?

Which layover airport has the shortest travel time from Knoxville to Lisbon?

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An easier way to manage your Lisbon trip

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